Microgrid Frequency Control Based on H_∞ Mixed Sensitivity
Microgrid Frequency Control Based on H_∞ Mixed Sensitivity
复制标题
基于H_∞混合灵敏度的微电网频率控制
作者：
Chen Jinyua
微网中有功功率的不平衡会导致微网频率的波动。为了稳定微网的频率，提出了一种通过控制微型涡轮机功率来平衡微网有功功率的鲁棒控制策略。分析了微网功率平衡的原理，建立了微网模型，基于H∞混合灵敏度设计了鲁棒控制器，使燃气涡轮机的输出功率随微网负载变化而变化，从而抑制微网频率波动。仿真结果验证了该方法的有效性。
Unbalancedactive power inmicrogridleads tothe fluctuation of microgrid frequency. To stabilize frequency of microgrid, a robust control strategy, which makes active power in microgrid balanced by controlling the power of micro-turbine, is proposed. The principle of microgrid power balance is analyzed and a the microgrid model is established; then based on H∞mixed sensitivity a robust controller is designed to make the output power of the gas turbine changed with load variation in microgrid and further the frequency fluctuation in microgrid is suppressed. The effectiveness of the proposed method is validated by simulation results.